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Single Family ResidenceResidential
$2,293,984$629 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $1,150,000 on Aug 1, 2011

27 RIVER ST

CONCORD, MA 01742
6
Beds
5 / 1
Baths
3,646 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.42 ac
Lot SizeThe size of the land the home sits on, from county records.
1831
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
11
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$2.3M
$2.1M low$2.5M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,150,000 · Aug 1, 2011
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$1,543,984
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$1,235,187
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.33%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$750,000
ROCKLAND TRUST CO · recorded Apr 13, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$30,233 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$2,280,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,058,600
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,221,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,280,000

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.71 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMiddlesex
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1965
Lot (acres)The size of the land the home sits on, from county records.0.42
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Hot Water
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Alcott Elementary SchoolA
Elementary · Grades KG–5 · 1.1 mi
H
Concord Carlisle High SchoolA+
High · Grades 9–12 · 1.2 mi
M
Concord Middle SchoolB+
Middle · Grades 6–8 · 2.0 mi

District: Concord School District

Neighborhood · ZIP 01742These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.47
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.74

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.2.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.18,974
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.737 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$185,796
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$221,000
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

27 River St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 96% of homes in Middlesex County
  • Costs more per square foot than 79% of homes in Middlesex County
  • Bigger than 93% of homes in Middlesex County
  • Has a smaller lot than 75% of homes in Concord 01742
  • Among the oldest homes in Concord 01742

What homes are worth in Concord 01742

Each bar is how many homes fall in that price range. The marker is this home.

This home
$542K$4.3M

This home is worth more than 82% of homes in Concord 01742.

How it measures up in Concord 01742

The dot is this home. The mark in the middle is the typical home in Concord 01742.

Estimated value$2,293,984
CheaperTypical $1,439,983Pricier

Pricier than 82% of homes nearby

Price per ft²$629
CheaperTypical $599Pricier

Pricier than 58% of homes nearby

Living area3,646 ft²
SmallerTypical 2,387 ft²Bigger

Bigger than 81% of homes nearby

Lot size0.42 ac
SmallerTypical 0.69 acBigger

Bigger than 25% of homes nearby

Year built1831
OlderTypical 1966Newer

Older than almost all homes nearby

How 27 River St ranks against every home in each area.
MeasureThis homeConcord 01742Middlesex County
Estimated valuepricier than$2,293,98482% of homes96% of homes
Price per ft²pricier than$62958% of homes79% of homes
Living areabigger than3,646 ft²81% of homes93% of homes
Lot sizebigger than0.42 ac25% of homes58% of homes
Year builtnewer than1831almost no homesalmost no homes

About 27 River St

How much is 27 River St, Concord, MA worth?

The TopHap Estimate for 27 River St, Concord, MA is $2,293,984 as of Jul 14, 2026. The likely range is $2,131,696 to $2,456,272. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 27 River St, Concord, MA last sell?

27 River St, Concord, MA last sold on Aug 1, 2011 for $1,150,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 27 River St, Concord, MA?

27 River St, Concord, MA has 6 bedrooms, 5 bathrooms, 3,646 square feet of living space and a 0.42-acre lot.

When was 27 River St, Concord, MA built?

27 River St, Concord, MA was built in 1831, making it 195 years old. The building has 2 stories.

What schools serve 27 River St, Concord, MA?

27 River St, Concord, MA is assigned to Alcott Elementary School (elementary), rated A; Concord Carlisle High School (high), rated A+; Concord Middle School (middle), rated B+. All sit in Concord School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 27 River St, Concord, MA compare to other homes in Concord 01742?

Among the 5,735 homes in Concord 01742, it is worth more than 82% of them ($2,293,984 against a typical $1,439,983), its price per square foot is higher than 58% of them ($629 against a typical $599), it is bigger than 81% of them (3,646 ft² against a typical 2,387 ft²), its lot is bigger than 25% of them (0.42 ac against a typical 0.69 ac) and it is newer than almost none of them (1831 against a typical 1966). Measured against all of Middlesex County, it is worth more than 96% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 27 River St, Concord, MA?

The 2025 property tax bill for 27 River St, Concord, MA was $30,233. The county assessed it at $2,280,000.

Closest homes

More homes in Concord 01742

Assigned schools

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